Smoke detector



FIG. 1 is a perspective view of the smoke detector embodying the design of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom view thereof.

The criss-cross lining which is shown in FIGS. 1 and 5 represents a conventional wire grill. 

The ornamental design for a smoke detector, as shown and described. 